My toilet water swirels in bowl after flushing, water does not overflow, but does not drain. It will drain when water is poured into bowl using 2 gal. pale. No other drains are blocked. Waste flows into septic. Symstem has no air vent installed on plumbing. This problem has just started. prior to this all flushed fine.
Here is a few things to do. 1 Make sure water in tank fills up to the mark in tank. 2 Check between tank and bowl to see if there is anything in the hole between tank and bowl. 3 Check flushing rim and see that all holes are open, use a mirrow. 4 Make sure jet hole is open in bottom of bowl. 5 Do all of this and bowl should drain.